Common App Activities descriptions

Hi I’m filling out the common app and I dont know how long my descriptions of activities should be. The text box is not very big. I originally put short bullets-not even sentences like “Played on club basketball team, started” or something like that. Can anyone give me advice on how long they should be. I feel like a college wants you to be concise so when they read it they get the idea right away, but i also dont want to come across as lazy. Thanks